# Set Delivery Restrictions

You can set delivery restrictions on mailboxes.

1. Right-click a user.
2. On the shortcut menu, click the Properties tab.
3. On the Exchange General tab, click Delivery Restrictions.
4. Under Outgoing message size, click No limit, or click Maximum KB.
   - Click No limit to place no limit on the size of outgoing messages.
   - Click Maximum KB, and then type a number to specify the maximum size, in kilobytes, allowed for outgoing messages.
5. Under Incoming message size click No limit, or click Maximum KB.
   - Click No limit to place no limit on the size of incoming messages.
   - Click Maximum KB, and then type a number to specify the maximum size, in kilobytes, allowed for incoming messages.
6. Set message restrictions:
   - To set restrictions so that the mailbox accepts messages from everyone under Message restrictions, click From everyone.
   - To set restrictions so that the mailbox only receives messages from a specific address or group of addresses under Message restrictions, click Only from, and then click Add. Repeat for each address you want to allow. To remove an address from the list, select the address, and then click Remove.
   - To set restrictions so that the mailbox excludes specific e-mail addresses, click From everyone except, and then click Add. Repeat for each address you want to restrict. To remove an address from the list, click the address, and then click Remove.
7. Click OK to save settings.